Cat Island radiocarbon (carbon 14) data from field activity 10BIM06

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Frequently anticipated questions:

What does this data set describe?

Title:
Cat Island radiocarbon (carbon 14) data from field activity 10BIM06
Abstract:
Scientists from the U.S. Geological Survey (USGS), St. Petersburg Coastal and Marine Science Center (SPCMSC), in collaboration with the U.S. Army Corps of Engineers (USACE), conducted geophysical and sedimentological surveys around Cat Island, the westernmost island in the Mississippi-Alabama barrier island chain. The objectives of the study were to understand the geologic evolution of Cat Island relative to other barrier islands in the northern Gulf of Mexico and to identify relationships between the geologic history, present day morphology, and sediment distribution. This report serves as an archive of terrestrial and marine sediment vibracores collected August 4-6 and October 20-22, 2010. Geographic Information System (GIS) data products include marine and terrestrial core locations and 2007 shoreline. Additional files included: marine and terrestrial core description logs, core photos, grain-size analysis, optically stimulated luminescence (OSL) dating and Carbon-14 dating locations and results, Field Activity Collection System (FACS) logs, and formal Federal Geographic Data Committee (FDGC) metadata (data products and downloads).
Supplemental_Information: None
  1. How might this data set be cited?
    Buster, Noreen A., and U.S. Geological Survey, 20140325, Cat Island radiocarbon (carbon 14) data from field activity 10BIM06: U.S. Geological Survey Data Series 834.

    Online Links:

    This is part of the following larger work.

    Buster, Noreen A., Kelso, Kyle W., Miselis, Jennifer L., and Kindinger, Jack L., 20140325, Sediment Data Collected in 2010 from Cat Island, Mississippi: U.S. Geological Survey Data Series 834, U.S. Geological Survey, St. Petersburg, Florida.

    Online Links:

  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -89.197071
    East_Bounding_Coordinate: -89.053196
    North_Bounding_Coordinate: 30.258884
    South_Bounding_Coordinate: 30.177428
  3. What does it look like?
  4. Does the data set describe conditions during a particular time period?
    Beginning_Date: 20-Oct-2010
    Ending_Date: 22-Oct-2010
    Currentness_Reference:
    ground condition
  5. What is the general form of this data set?
    Geospatial_Data_Presentation_Form: tabular digital data
  6. How does the data set represent geographic features?
    1. How are geographic features stored in the data set?
      This is a Vector data set. It contains the following vector data types (SDTS terminology):
      • Point (29)
    2. What coordinate system is used to represent geographic features?
      The map projection used is WGS 1984 UTM Zone 16N.
      Projection parameters:
      Scale_Factor_at_Central_Meridian: 0.9996
      Longitude_of_Central_Meridian: -87.0
      Latitude_of_Projection_Origin: 0.0
      False_Easting: 500000.0
      False_Northing: 0.0
      Planar coordinates are encoded using coordinate pair
      Abscissae (x-coordinates) are specified to the nearest 0.000000002220024164500956
      Ordinates (y-coordinates) are specified to the nearest 0.000000002220024164500956
      Planar coordinates are specified in Meter
      The horizontal datum used is D WGS 1984.
      The ellipsoid used is WGS 1984.
      The semi-major axis of the ellipsoid used is 6378137.0.
      The flattening of the ellipsoid used is 1/298.257223563.
  7. How does the data set describe geographic features?
    CatIsland_C14_Table
    Radiocarbon (C14) data anlysis results of marine vibracores collected on Cat Island, Mississippi (Source: USGS)
    Core ID
    Marine vibracore sample number (Source: USGS) Core identification number assigned by USGS scientist
    Sample depth in core (m)
    Sample depth measured from top of core (m) (Source: USGS)
    Range of values
    Minimum:2.92
    Maximum:3.75
    Type
    shell type (mollusc) (Source: USGS) Type of shell material analyzed.
    Process
    Data analysis process method used by the Woods Hole Oceanographic Institution National Ocean Sciences Accelerator Mass Spectrometry Facility. (Source: Woods Hole Oceanographic Institution National Ocean Sciences Accelerator Mass Spectrometry Facility) Shell type
    Accession #
    Sample identification used by the Woods Hole Oceanographic Institution National Ocean Sciences Accelerator Mass Spectrometry Facility. (Source: Woods Hole Oceanographic Institution National Ocean Sciences Accelerator Mass Spectrometry Facility) Sample number assigned by lab.
    Fraction Modern
    Fraction Modern is a measurement of the deviation of the 14C/12C ratio of a sample from "Modern." Modern is defined as 95% of the radiocarbon concentration (in AD 1950) of NBS Oxalic Acid I normalized to d13CVPDB=-19 per mil (Olsson, 1970). Please see laboratory website for further discussion of definition (www.whoi.edu/nosams/page.do?pid=40146). (Source: Woods Hole Oceanographic Institution National Ocean Sciences Accelerator Mass Spectrometry Facility)
    Range of values
    Minimum:0.6344
    Maximum:0.7487
    Fraction Modern Error
    The error associated with the fraction modern value. Please see laboratory website for further discussion of definition (www.whoi.edu/nosams/page.do?pid=40146). (Source: Woods Hole Oceanographic Institution National Ocean Sciences Accelerator Mass Spectrometry Facility)
    Range of values
    Minimum:0.0019
    Maximum:0.0019
    Age
    Radiocarbon age (Source: Woods Hole Oceanographic Institution National Ocean Sciences Accelerator Mass Spectrometry Facility)
    Range of values
    Minimum:2320
    Maximum:3660
    Age
    Radiocarbon age (Source: Woods Hole Oceanographic Institution National Ocean Sciences Accelerator Mass Spectrometry Facility)
    Range of values
    Minimum:2320
    Maximum:3660
    Age
    Radiocarbon age error (Source: Woods Hole Oceanographic Institution National Ocean Sciences Accelerator Mass Spectrometry Facility)
    Range of values
    Minimum:20
    Maximum:25
    d13C
    An isotopic signature measuring the stable isotopes 13C/12C. (Source: USGS)
    Range of values
    Minimum:-1.01
    Maximum:0.26
    d13C Source
    Measured or not measured. (Source: Woods Hole Oceanographic Institution National Ocean Sciences Accelerator Mass Spectrometry Facility) Sample number assigned by lab.
    D14C
    D14C is "defined in Stuiver and Pollach (1977) as the relative difference between the absolute international standard (base year 1950) and sample activity corrected for age and d13C. The D14C is age corrected to account for decay that took place between collection (or death) and the time of measurement so that two measurements of the same sample made years apart will produce the same calculated D14C result."Please see laboratory website for further discussion of definition (www.whoi.edu/nosams/page.do?pid=40146). (Source: Woods Hole Oceanographic Institution National Ocean Sciences Accelerator Mass Spectrometry Facility)
    Range of values
    Minimum:-370.22
    Maximum:-256.73

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
    • Noreen A. Buster
    • U.S. Geological Survey
  2. Who also contributed to the data set?
    U.S. Geological Survey and the Army Corps of Engineers (outside funding source)
  3. To whom should users address questions about the data?
    U.S. Geological Survey - St. Petersburg Coastal and Marine Science Center
    Attn: Noreen A. Buster
    Geologist
    600 4th Street South
    St. Petersburg, FL
    US

    (727) 502-8000 (voice)
    nbuster@usgs.gov

Why was the data set created?

The Marine_C14_Table.xlsx file includes all radiocarbon (C14) analysis results from marine vibracores collected around Cat Island, Mississippi in October 2010 by the U.S. Geological Survey (USGS), St. Petersburg Coastal and Marine Science Center. Multiple data types were collected throughout the duration of this project; however, only the results of the C14 component are presented in this archive data series.

How was the data set created?

  1. From what previous works were the data drawn?
    2010 Cat Island bathy (source 1 of 1)
    U.S. Geological Survey, 2012, Bathymetry and acoustic backscatter data collected in 2010 from Cat Island, Mississippi.

    Online Links:

    Type_of_Source_Media: Online digital data
    Source_Contribution:
    Data provides bathymetric data for obtaining core site elevations
  2. How were the data generated, processed, and modified?
    Date: 2011 (process 1 of 3)
    Two mollusc samples were collected from two vibracores, cleaned, and sent to the Woods Hole Oceanographic Institution National Ocean Sciences Accelerator Mass Spectrometry Facility. Person who carried out this activity:
    U.S. Geological Survey St. Petersburg Coastal and Marine Science Center
    Attn: Noreen A. Buster
    Geologist
    600 4th Street South
    St. Petersburg, FL
    U.S.

    (727) 502-8000 (voice)
    nbuster@usgs.gov
    Date: 2012 (process 2 of 3)
    Sample depth in core (m), type of shell, laboratory procedure, lab sample identification, fraction modern, fraction modern error, age, age error, d13C, d13C source, and D14C values were entered into Excel spreadsheet with corresponding marine vibracore core identification. Person who carried out this activity:
    U.S. Geological Survey St. Petersburg Coastal and Marine Science Center
    Attn: Noreen A. Buster
    Geologist
    600 4th Street South
    St. Petersburg, FL
    U.S.

    (727) 502-8000 (voice)
    nbuster@usgs.gov
    Date: 13-Oct-2020 (process 3 of 3)
    Added keywords section with USGS persistent identifier as theme keyword. Person who carried out this activity:
    U.S. Geological Survey
    Attn: VeeAnn A. Cross
    Marine Geologist
    384 Woods Hole Road
    Woods Hole, MA

    508-548-8700 x2251 (voice)
    508-457-2310 (FAX)
    vatnipp@usgs.gov
  3. What similar or related data should the user be aware of?

How reliable are the data; what problems remain in the data set?

  1. How well have the observations been checked?
    The two radiocarbon dates reported in the table were analyzed by the Woods Hole Oceanographic Institution National Ocean Sciences Accelerator Mass Spectrometry Facility and include error reported by this lab.These radiocarbon data have not been independently verified for accuracy.
  2. How accurate are the geographic locations?
  3. How accurate are the heights or depths?
  4. Where are the gaps in the data? What is missing?
    This is a complete processed marine vibracore radiocarbon data file for the field site.
  5. How consistent are the relationships among the observations, including topology?
    The data include sample depth in core (m), type of shell, laboratory procedure, lab sample identification, fraction modern, fraction modern error, age, age error, d13C, d13C source, and D14C values.

How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?
Access_Constraints: none
Use_Constraints:
The U.S. Geological Survey requests that it be referenced as the originator of this dataset in any future products or research derived from these data.
  1. Who distributes the data set? (Distributor 1 of 1)
    U.S. Geological Survey St. Petersburg Coastal and Marine Science Center
    Attn: Noreen A. Buster
    600 4th Street South
    St. Petersburg, FL
    U.S.

    502-8000 (voice)
    nbuster@usgs.gov
  2. What's the catalog number I need to order this data set? Downloadable data
  3. What legal disclaimers am I supposed to read?
    This publication was prepared by an agency of the United States Government. Although these data have been processed successfully on a computer system at the U.S. Geological Survey, no warranty expressed or implied is made regarding the display or utility of the data on any other system, nor shall the act of distribution imply any such warranty. The U.S. Geological Survey shall not be held liable for improper or incorrect use of the data described and (or) contained herein. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof.
  4. How can I download or order the data?
  5. Is there some other way to get the data?
    none
  6. What hardware or software do I need in order to use the data set?
    This spreadsheet was created for use with Microsoft Excel 2010. It may also be viewed with the Microsoft Excel viewer or by downloading a Microsoft Compatibility Pack to view with older versions of Microsoft Excel.

Who wrote the metadata?

Dates:
Last modified: 22-Sep-2021
Metadata author:
U.S. Geological Survey St. Petersburg Coastal and Marine Science Center
Attn: Noreen A. Buster
Geologist
600 4th Street South
St. Petersburg, FL
U.S.

(727) 502-8000 (voice)
nbuster@usgs.gov
Metadata standard:
FGDC Content Standard for Digital Geospatial Metadata (FGDC-STD-001-1998)
This page is <https://cmgds.marine.usgs.gov/catalog/spcmsc/10BIM06_Marine_C14_Table.faq.html>
Generated by mp version 2.9.50 on Wed Sep 22 17:19:07 2021